JPS5472921A - Display unit - Google Patents

Display unit

Info

Publication number
JPS5472921A
JPS5472921A JP13996477A JP13996477A JPS5472921A JP S5472921 A JPS5472921 A JP S5472921A JP 13996477 A JP13996477 A JP 13996477A JP 13996477 A JP13996477 A JP 13996477A JP S5472921 A JPS5472921 A JP S5472921A
Authority
JP
Japan
Prior art keywords
display
memory
code
address
read out
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP13996477A
Other languages
Japanese (ja)
Other versions
JPS595903B2 (en
Inventor
Fumiya Murata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13996477A priority Critical patent/JPS595903B2/en
Publication of JPS5472921A publication Critical patent/JPS5472921A/en
Publication of JPS595903B2 publication Critical patent/JPS595903B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To simplify a unit which converts coded informatin into a display pattern, by storing display patterns in the excess region of a refresh memory and by reading out a display pattern equivalent to a display information code read out read out previously.
CONSTITUTION: A display information code is set to the lower address of refresh memory 9, and a display pattern is to the upper address. Within periods A and B in the update interval of address counter 7, access to memory 9 is done twice; and then, multiplexer 10 reads out display-code infomrmation in periid B, and elects the display pattern equivalent to te display-code information from fixed-address register 12 in period A before supplying it to memory 9. In period B, a parallel dot pattern code 9 equivalent to the scanning line indicated by horizontal countr 8 among corresponding display patterns is read out from memory 9 and supplied to video amplifier 5 via parallel-series converter register 4, thereby displaying it on display part 6.
COPYRIGHT: (C)1979,JPO&Japio
JP13996477A 1977-11-24 1977-11-24 display device Expired JPS595903B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13996477A JPS595903B2 (en) 1977-11-24 1977-11-24 display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13996477A JPS595903B2 (en) 1977-11-24 1977-11-24 display device

Publications (2)

Publication Number Publication Date
JPS5472921A true JPS5472921A (en) 1979-06-11
JPS595903B2 JPS595903B2 (en) 1984-02-07

Family

ID=15257762

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13996477A Expired JPS595903B2 (en) 1977-11-24 1977-11-24 display device

Country Status (1)

Country Link
JP (1) JPS595903B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59161185U (en) * 1983-04-14 1984-10-29 株式会社精工舎 Digital image display circuit
JPS59214079A (en) * 1983-04-25 1984-12-03 スペリ−・コ−ポレ−シヨン Video display control circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62186870A (en) * 1986-02-12 1987-08-15 テルモ株式会社 Branch pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59161185U (en) * 1983-04-14 1984-10-29 株式会社精工舎 Digital image display circuit
JPS59214079A (en) * 1983-04-25 1984-12-03 スペリ−・コ−ポレ−シヨン Video display control circuit

Also Published As

Publication number Publication date
JPS595903B2 (en) 1984-02-07

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